body {
    margin: 0 auto;
    margin-top: 100px;
    margin-bottom: 100px;
    text-align: center;
    font-family:'Courier New', Courier, monospace;
}

img {
    width: 600px;
    height: auto;
}

div.triptych {
    margin: 0 auto;
    width: 900px;
}

img.triptych {
    width: 280px;
}

p {
    width: 600px;
    text-align: left;
    margin: 0 auto;
}

ul {
    width: 600px;
    text-align: left;
    margin: 0 auto;
}
li {
    padding: 10px;
    list-style-type: circle;
}